My iPod screen is not able to function I am unable to see any details at all,there are black marks on the face and I can not see any lists I can still listen to the music but I have no control over the settings not able to see them.

What generation iPod is it. If its a classic (6th gen or higher) good luck getting it open with out damaging it. If its an older iPod they are fairly easy to open. But regardless of the generation seems like you need to replace the screen.